<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>ZD集团</title>
</head>
<body>
    <div class="top">
    
    </div>
    <div class="center">

    </div>
</body>
</html>
<style>
    *{
        margin: 0 ;
        padding: 0;
    }
    .top{
        width: 100%;
        height: 200px;
        border: 1px solid black;
        background-image: url("images/bj.png");
    }
    .center{
        width: 100%;
        height: 50px;
        border: 1px solid black;
        background-image: url("./images/bj.png");
    }
</style>